Fuse.



F. e, JONES.

FUSE.

APPLICATION FILED MAR. 11 308.

941,020. Patented Nov.23,1909.

FRANK G. JONES, OFMUSKEGON, MICHIGAN.

ruse.

Specification of Letters Patent.

To all whom 'it may concern:

Be t known that l, FRANK G. JoNns, a citizen of the Unlted States of America, and a resident of Muskee'on, county of Mu keg'on, and State of lvlichigan, have invented a new and useful Improvement in Fuses, of

. which the following is a. specification.

4 rially and'passin g its ends brought My invention provides an improved form of electrical fuse, especially adapted to uses in telephone construction; although not necessari'lfso limited;

I provide a porcelainfuse wire support and install upon the ends of the porcelain support conducting caps .as terminals for the fuse wire.' WVithin' the porcelain support I provide a tortuous channel for the fuse, thus attaining a desirable length of fuse without involving an undesirable length of porcelain support. f

In the drawings Figure 1 shows side view of the fuse of my invention: Fig. 2 shows end view of samerFig. 3 shows section of Fig. 1 on the line A A: Figs. 4 and 5 show respectively side and end views of my fuse equi 'ipcd. with an alternative type of connecting terminals,- and Figs. (3 and 7 show side and end views respectively of the porcelain body ofiny improved fuse.

Describing'first the also. of Figs. 1, 2 and 3, 1 is a porcelain cylinder having" three lateral channels; 2 2 are ferrules upon the ends of the porcelain Jcylinder; 3 3 are shouldered end studs or terminals caps for attachment to .the' ferrules .Ferrules2and .BQa-re drilled to receive theiends of the fuse wire." '.llhe .f 1se is assembled by passing the fuse wired threueh t-he'threo channels seheholes 3 then areplaced and the fuse isjcon'iplet ready to be installed ror v the fuse and to "complete. the-cii-(ruit through )l'ding;devices being clips? -,.-a-ml-nuti 35. llnd stud 31 carries was-hm. 3G and nuts 3" iilns design of teln'nnal Marital" ervlcedn-a,dei co clamping the end studs ()l';Sl10llltlG1S to hold femur orrron Patented N wer), 1909. Application filedMarhll, 1908. Serial No. 420,367. v t

'l substations, the clamps 34 being attached to g'the line wire and the nuts 37 clamping the conductor leading to the telephone instrument.

der may be slightly enlarged "so {thatend caps such asQ-and 2 may be forcedon' a-nc crimped or spun down slightly, thusgiying' positive grip of the end cap upon the pol ce lain cylinder Without subjecting the porce limitation being that the terminal studs be curing the end caps removably, the fuse may fuse.

In Figs. 6 and 7,

portion of the fuse is shown. This.strucnon-combustible.

are positioned differently from thosedn the sectional view' of .Fi'g. 3,} producing a 'd'vant 'ge'f eon pl t hailing Ia.v standard l and" {s rcg'inechani' strfiict/i Having thus. describedl'my inventl I I claim as new and desire to seen UnitedStatesLettersPatent is: Q

ing. an enlargement near the end ferrule uponthc end of saLd support The ferrules may be attached to the porcelain red by any desiredmechanical method}; by n'reans of cement, byforcing the ferrules: upon the rod, by crimping the feri ulesupon the rod, or the ends of the porcelaincylindetail of the porcelain.

tural part may be of any insulating material, but preferably should be weatherproofgnd" There may be as many holes 5 as desired. The channels 5 in Flg. 7 v

stronger porcelainrod. The advantages of a small duct are;

wellfun erstood as also are the-advantages,"

d of s ompared;

1.-In amounted fuse, a fuse support iavfl spun or crimped over the enlargement.

lain to such clamping strains as would ren- The attachment of theterminal studs to a the ferrules likewise may be made by any mechanical means, by screw-:75-

detachably secured to the ferrules. By -se- 80 be opened for inspection or forinstallafion f of a new fuse wire after the blowing of the as described.

end of said support, said ferrules being internally threaded; shouldered binding post studs externally threaded and screwed into said ferrules; and

support, the terminals (if-said fuse wire being connected to said ferrules, substantially 3. In a strong current protector, a porcelain rod having-u plurality of longitudinal holes therethrough, a fuse wirefrunmng sen -fuse wire within said and forth through said longimetallic terminals fuse wire rigidly attached to th ends of said porcelain tube; and studs engaging said metallic Signed by me at Muskegou, county of ,Muskcgon an'd'Stnte of Michigan, in the presence of two witnesses.

tudinal holes;

Witnesses:

J.- A. KENNY, ALBERT 0. AA DERSQN.

for said i detachable terminal fuse termnmls. 

